TBA - Create a TOR_BROWSER_VERSION AppConstant
The mobile/android/ code doesn't use a preprocessor like the C++ and Javascript code. Instead, there is a class AppConstants containing constant values (and getters) that are set at build time. We will need this for handling when we should do something Tor Browser-specific. Currently Orfox comments large blocks of code, however this isn't easily maintainable and it's not clean, especially if we are (closely) following m-c. If we have a build-time constant, then we can accomplish similar functionality as the mozbuild preprocessor conditional statements.